A practical course in mechanical drawing for individual study and shop classes, trade and high schools (1912)
Willard, William Franklin, 1879- · Chicago : Popular mechanics company · leaf 96
MECHANICAL DRAWING 93 95, it will be seen that the object is projected up intothe plane of the paper to obtain the auxiliary view.After the pattern is draw^n it is transferred from the … manila or bristol paper to the metal by pricking pointswith a sharp punch along the contour of the pattern,due allowance being made for lap and seam. Thedouble edge shown on the development of the quartmeasure is for the lock seam shown at A, Fig. lOO. 94 A PRACTICAL COURSE IN PARALLEL METHOD…
Mechanical drawing
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